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"Hydrofluorocarbons are gases most people have never heard of, even though almost everybody in America has bought their fair share of them. They come inside cars and air conditioners and refrigerators as the newest gases of choice in cooling systems. They are also many thousands of times more potent than CO2 as climate warming agents, and scientists say their spread could become as much as 50 percent of the global greenhouse gas problem by 2050. Yet the public is barely aware of the issue, and as the White House works to hammer out its policy, it seems to want to keep it that way."